2 years ago

Q2) Which of the follwing best describes counting in the early childhood setting?

Mathematics

1 answer:

KonstantinChe [14]2 years ago

8 0

Answer:

the correct answer is a

Step-by-step explanation:

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a student either knows the answer or guesses. Let 3434 be the probability that he knows the answer and 1414 be the probability t

Arlecino [84]

Answer: $\dfrac{12}{13}$

Step-by-step explanation:

Let A = he known the answer then A' = he guess the answer.

B = he answered it correctly

As per given , we have

$P(A)=\dfrac{3}{4}\ \ ,\ \ P(A')=\dfrac{1}{4}$

$P(B|A)=1$

$P(B|A')=\dfrac{1}{4}$

By Bayes theorem , we have

$P(A|B)=\dfrac{P(B|A)P(A)}{P(B|A)P(A)+P(B|A')P(A')}\\\\ P(A|B)=\dfrac{1\times\dfrac{3}{4}}{1\times\dfrac{3}{4}+\dfrac{1}{4}\times\dfrac{1}{4}}\\\\= \dfrac{12}{13}$

The probability that the student knows the answer given that he answered it correctly is $\dfrac{12}{13}$ .

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2 years ago

Two-fifths of one less than a number is less than three-fifths of one more than that number. What numbers are in the solution se

Nutka1998 [239]

The answer is c that what i think

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2 years ago

Chase plays the piano and cello. For every 2 hours he practices the piano, he practices the cello for 3 hours. If he practices t

Zolol [24]

10 1/5

really hopes this helped you with what you were solving

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2 years ago

In a fruit salad, there are 12 strawberries, 14 grapes, 6 kiwis, and 4 papayas. Find the ratio of kiwis to the total number of p

KonstantinChe [14]

Answer:

1:6

this is because 6 kiwis + 30 fruits = 36 fruits. Then you have 6 kiwis and 36 fruits. therefore the ratio is 6:36. when you simplify , it becomes 1:6

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2 years ago

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What is -2(6a-2b+4c-9)

scoray [572]

Answer:

-12a + 4b - 8c + 18

Step-by-step explanation:

To do this, you will need to use the Distributive Property. Multiply the number outside of the parenthesis by the terms inside of the parenthesis.

-2(6a - 2b + 4c - 9) becomes:

-12a + 4b - 8c + 18

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2 years ago

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